<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>css demo</title>
    <style>
        body {
            background-color: #d0e4fe;
        }

        h1 {
            color: orange;
            text-align: center;
        }

        p {
            font-family: "Times New Roman";
            font-size: 20px;
        }
    </style>
</head>
<body>
<h1>标题</h1>
<p>段落</p>
</body>
</html>
